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LA72680M Datasheet(PDF) 7 Page - Sanyo Semicon Device

Part No. LA72680M
Description  JAPAN TV Sound Multiplex Demodulation HiFi Sound Signal Processor
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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LA72680M
No.7955-7/21
Pin Description
DC voltage
Pin
No.
Pin Function Name
AC level
Function
Equivalent circuit
1
77
Line Mute terminal(L)
Line Mute terminal(R)
When the power supply VCC is on, the
switch of Pin 77 and Pin 1 is turned to ON to
reduce the line out noise.
In this case, it is necessary to apply 5 fixed
DC to Pin 5.
10
Pin77
Pin1
2
Output terminal
for RF modulator
DC; 4.2V
Output terminal for RF modulator.
ALC level can be settled to -1dBV and OFF
by serial control.
300k
10k
MUTE
3
VCC 9V
Power supply of Line Out.
5
ALWAYS VCC
Power supply for the noise elimination mute
control when power is on.
15
VCC 5V(Lch)
5V power supply of Lch.
32
VCC 5V
5V power supply of HEAD AMP.
36
Power supply for Logic
Power supply for Logic.
46
VCC 5V(Rch)
5V power supply of Rch.
54
9V power supply for
MTS
9V power supply of MTS.
DC; 2.5V
4
NORMAL input
terminal
AC; -28.2dBV
NORMAL IC output signal is entered and
output to Line Out through output changeover.
G4D7/0:0dB
1:3dB
500
Vref
DC; 2.5V
6
NORMAL output
terminal
AC; -21.2dBv
This is connected to input of NORMAL
AUDIO IC.
200
DC ; 0V
7
9
11
69
71
73
Audio input terminal
EXT1_IN(L)
EXT2_IN(L)
EXT3_IN(L)
EXT1_IN(R)
EXT2_IN(R)
EXT3_IN(R)
AC; -28.2dBV
Audio input terminal.
500
Continued on next page.




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